📖 Book
✓ Link checked
Paid
Beginner
Why we picked it
The single best thing ever written on customer conversations. It teaches you to ask about the customer's life and past behaviour, not your idea, so you can't be lied to. If a founder reads one thing before talking to a single customer, it's this.
From
momtestbook.com
by Rob Fitzpatrick
~130 pages
- Talk about their life, not your idea.
- Ask about specifics in the past, not opinions about the future.
- 'That's so cool, I'd totally buy it' is a compliment, not data, dig for commitment and evidence.
Open
momtestbook.com →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
The canonical fake-door test, told by the founder who ran it. Buffer started as a two-page site: one page pitched the tool, a pricing button led to an email capture, and every signup got a personal note. Real demand, real conversations, a paying customer in weeks, and not a line of product code.
From
Buffer
by Joel Gascoigne
~10 min read
- Test willingness to pay with a pricing page before you build.
- Email every signup by hand and start a conversation.
- A landing page measures behaviour, not opinions.
Open
buffer.com →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
Blank, who built customer development, uses a real founder story to show how a team defaulted to 'build a smaller product' when the right move was a test that cost almost nothing. The piece pushes you to name your riskiest assumption and design the cheapest possible experiment against it. It is a direct match for the idea that your MVP might be a conversation or a fake feature, not code.
From
steveblank.com
by Steve Blank
7 min read
- Start from the assumption that could kill you, then test only that
- The cheapest experiment that answers the question beats a small polished build
- You are selling the vision but delivering the minimum feature set
Open
steveblank.com →
📄 Article
✓ Link checked
Freemium
Beginner
Why we picked it
Todd Jackson studied how dozens of now-large companies validated their very first idea. The pattern that repeats: deliver the outcome by hand, talk to real users, and watch for genuine emotion. A polite 'that's cool' is a no. Strong reactions are the signal you want.
From
Lenny's Newsletter
by Todd Jackson
~15 min read
- Manual delivery beats a survey for early signal.
- Look for strong emotion, not politeness.
- Great ideas usually start from a problem you have lived.
Open
lennysnewsletter.com →
📄 Article
✓ Link checked
Freemium
Intermediate
Why we picked it
If you are selling to companies rather than consumers, this is the specific playbook. Four concrete ways founders got signal before building, from doing the job by hand for one customer to interviewing dozens of potential users first.
From
Lenny's Newsletter
by Lenny Rachitsky
~12 min read
- Do the job by hand for one real customer before automating.
- Interview a wide set of potential users before committing.
- B2B signal looks different from consumer signal.
Open
lennysnewsletter.com →
📖 Book
✓ Link checked
Paid
Beginner
Why we picked it
Savoia, who led early Google AdWords, argues most ideas fail because nobody wanted them, and teaches pretotyping: cheap experiments that generate your own data on real demand before you build. You get concrete tactics like the fake-door and the mechanical-turk test, plus a way to demand skin-in-the-game commitment rather than opinions. Practical for anyone who wants a test that can prove them wrong.
From
Alberto Savoia
by Alberto Savoia
~250 pages
- Collect your own data on real behaviour instead of trusting opinions
- Pretotype the idea to test demand before you build a prototype
- Measure commitments like a signup or a payment, not verbal enthusiasm
Open
albertosavoia.com →
✍️ Essay
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Free
Intermediate
Why we picked it
This is the most concrete walkthrough of how to test a niche when you have nothing built yet: put up a page describing the offer and count who actually clicks or signs up. It treats a click as a behavior, not an opinion, which is exactly the difference between real demand and polite interest. It gives you the seven steps, rough benchmarks, and the ethics of an honest reveal page, so you can run it this week for almost no money.
From
kromatic.com
by Kromatic (The Real Startup Book)
~15 min read
- A click or an email is a behavioral signal, worth far more than someone saying they like the idea
- Set your success threshold and sample size before you start, so you cannot rationalize a weak result
- Be honest on the reveal page ("coming soon, join the list") so the test does not burn trust in your own niche
Open
kromatic.com →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
DoorDash started as PaloAltoDelivery.com, a one-hour landing page with PDF menus and a phone number, and the founders personally drove every early order. It is a clean real example of combining a landing-page test with concierge delivery, then learning the operations by hand before automating anything. Concrete proof that you can test a real service with almost nothing built.
From
Startup Archive
by Startup Archive
5 min read
- Launch a bare landing page in an hour to test the hypothesis
- Deliver the service yourself to learn the operations first-hand
- Doing things that do not scale is an early advantage
Open
startuparchive.org →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
A clear, careful definition of the landing-page test from a respected product discovery teacher, including its real limits. It is honest that a landing page tests interest and messaging, not whether people will truly pay or use the thing, which stops you overreading a click. Read it so you know exactly what your landing test can and cannot prove.
From
Product Talk (Teresa Torres)
by Teresa Torres
6 min read
- A landing page tests interest and messaging, not real usage
- Drive real traffic or the numbers mean nothing
- Know the limits so you do not overread a signup
Open
producttalk.org →
📄 Article
✓ Link checked
Free
Beginner
Why we picked it
A tight, practical breakdown of what a concierge MVP is actually testing, using the Food on the Table example step by step. It makes the key point that the personal service is not the product, it is a learning activity aimed at your riskiest assumptions. Read it when you want the concept explained clearly without a book-length commitment.
From
Res Extensa (Coleman McCormick)
by Coleman McCormick
- The concierge service is a learning tool, not the product.
- Aim it squarely at your leap-of-faith assumptions.
- Find something customers love before worrying about scale.
Open
resextensa.co →
📄 Article
✓ Link checked
Free
Intermediate
Why we picked it
A tactical, budget-specific walkthrough of running a real landing-page test with a small paid-traffic spend so your numbers are not just friends and family. It covers building the page, driving qualified traffic, and reading conversion honestly. Practical when you want a concrete recipe and rough benchmarks for what a passing test looks like.
From
GrowthMentor
by Foti Panagiotakopoulos
15 min read
- Send paid, qualified traffic so results are not skewed by friends
- A tiny ad budget is enough to get a real read
- Judge the conversion rate against a threshold you set upfront
Open
growthmentor.com →
Why we picked it
The permission slip to recruit users by hand, do things manually, and deliver 'insanely great' experiences to your first few customers. The cheapest, most honest way to validate demand is to go get it one person at a time.
From
paulgraham.com
by Paul Graham
~15 min read
- Recruit your first users manually, don't wait for them to come.
- A tiny group of users who love you beats a big group who like you.
- Manual, unscalable effort early is a feature, not a failure.
Open
paulgraham.com →
Why we picked it
This is the founder essay that made the case for validating before you build, from the person who did it with Buffer. Gascoigne frames the no-code or landing page MVP not as a shortcut to a product, but as a way to learn whether anyone actually wants the thing, which is exactly the stance this question takes. His honest point is that 120 signups plus real conversations taught him more than any polished build would have.
From
Medium (Joel Gascoigne, co-founder of Buffer)
by Joel Gascoigne
- The goal of a no-code or landing page MVP is validated learning, not vanity signups: talk to the people who respond, do not just count emails.
- Anything can be your MVP as long as you are genuinely testing demand before committing to a full build.
- Buffer got only 120 signups in seven weeks, but the direct conversations proved real interest and led to paying customers at launch.
Open
medium.com →
